As students come and go throughout the year, it's possible that the number of students enrolled differs from the number of students you've been invoiced for.
You can check the number of students you have enrolled, and make changes to this, at any time.
Open Manage Accounts in the Control Panel.
All of the classes in your school will be listed, with classes you are a teacher of at the top in bold. Click on Licences.
Each of the licences your school has been allocated will be listed on this page. You can see the number of students you currently have enrolled and the number of licences you have been allocated/invoiced for at the far right, under the Users column.
The first number is the number of enrolled students; the second number is the number of licences assigned to you. For example, in the screenshot below 5 students have been enrolled, and the school has been allocated 10 licences.
You can also see whether this licence is a trial licence, which subject areas it covers, and when the licence will expire. To see which classes are on a licence, click on it; the classes will appear in Classes this licence applies to below.
To change the students on your licence, see How do I add students/teachers?